Casting mechanism



June 24 1930. J. E. HOY

CASTING MECHANISM Filed Nov. 12. 1926 I N VEN TOR.

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15 ways 1n which the Patented June 24, 1930 UNITED STATES PATENT OFFICEI JOHN E. HOY, DIE-MIDLAND, MICHIGAN, ASSIGNOR TO THE .DOW CHEMICALCOMPANY, OF MIDLAND, MICHIGAN, A CORPORATION OF MICHIGAN CASTINGMECHANISM Application filed November 12, 1926. Serial No. 147,888.

This invention relates to metal casting, and more particularly castinglight metals, and it is among the objects of the invention to provide anequipment capable of forming rods or bars of various sizes, and in amanner allowing ready discharge. Other objects and advantages willappear as the description proceeds. v

To the accomplishment of the foregoing and related ends, the invention,then, consists of the means hereinafter fully described, andparticularly pointed out in the claims, the f0llowing description andthe annexed drawing settin forth in detail but one of the variousprinciple'of the invention may be employed.

In said annexed drawing 2- Fig. 1 is a central vertical sectional viewshowing an embodiment of the invention;

Fig. 2 is a plan View; and Fig. 3 is a sectional detail of amodification.

The reference character 1 in the drawing designates a support or frameof any suitable form in which is mounted a spindle 2 carrying apouring-box made up of a lower section 3 and a removable upper section4. The mating sections 3, 4, are radially recessed for the engagement ofmolds, which are preferably I in the form of tubes 5, a shoulder 6advantageously being provided as an inner abutment for the tube. Thetubes may be of any desired material and size, but conveniently will bemade of seamless steel tube, and engage between the mating sections 3and 4-. of the pouring-box (the upper section 4 being lifted up for this.purpose). These molds or tubes then project out radially, each tubeabutting at its outer end against an outer abutment carried by an arm 7,and the abutment can if desired provide the outer closure for the tube,but I prefer a separate closure, for instance a cap 8, which may beprovided with a vent. Additional supports 9 for the tubes may be carriedby the arms 7. Instead of having individual abutments at the outer endof each tube, it is generally more desirable to provide an abutment inthe form of an annulus or ring 10 carried by the arms 7, and this ringmay be provided with a ledge 11 below.

contained metal may then be lifted out from,

tinctly claim as my invention On the spindle 2 is a drive-gear 0r pulley12 by which the device may be rotated as desired.

In use, with the tubes and pouring-box all assembled, the material to becast, for example magnesium, is poured into the box, and rising up onthe outer side of the skimming ring projection 13 flows out through theradial openings into the molds or tubes 5. These tubes 5 may be ofvarious sizes as desired, and for larger sizes it is not ordinarilynecessary to rotate the device. In the case of smaller sized mold tubes,it is however usually desirable to rotate the assemblage, so as toproperly insure adequate filling. The metal mass quickly solidifies, andthe upper section 4 of the pouring-box is then lifted off by means ofthe handles 14, and the assemblage of tubes held together 'in spiderform by the the pouring-box. By then knocking 0d the closures, if suchbe used,.the tubes may then be readily slid off from the contained castmetal. To facilitate the strip, it is desirable to preliminarily smokethe interior of the tubes or apply some other coating allowing of readystripping. With the mold tubes removed the cast portions may now besevered from the central body, by any suitable means, and the centralportion left may be returned to be remelted.

It will thus be seen that the device as a whole presents an effectiveand simple means of casting materials where a relatively small amount ofcooling is required, and the assemblage may be quickly put togetheragain ready for further use.

Other modes of applying the principle of the invention may be employed,change being made as regards the details disclosed, provided the meansstated by any of the fol lowing claims or the equivalent of such beemployed.

I therefore particularly point out and dis- 1. In a casting machine, thecombination of a rotatable pouring-box comprising upper and lowersections, a skimming obstruction in said box, said sections havingshouldered radial recesses in the mating surfaces, moldtubes engageablein such radial recesses, and peripheral means for holding said tubes inrelation.

2. In a casting machine, the. combination of a rotatable pouring-boxcomprising upper and lower sections, a skimming projection extendlngdownwardly from the upper section, mold-tubes engageable radially withsaid pouring-box, removable closures for the outer ends of said tubes,and means for holding the tubes in place.

3. In a casting machine, the combination of a pouring-box comprisingupper and lower sections and having ra'dial recesses in the matingsurfaces, mold-tubes engageable in such radial recesses, removable capsfor the outer ends of said tubes, and peripheral means for holding thetubes in place.

4. In a casting machine, the combination of a pouring-box comprisingupper .and lower sections and having radial recesses in the matingsurfaces, mold-tubes engageable in such radial recesses, an annularskimming the mating surfaces, mold-tubes"engageable in such radialrecesses, an annular skimming pro ect10n extending downwardlyjrom theupper box section, removable caps for the outer ends of said tubes and aperipheral ring holding said tubes in'relation. Signed by me this 4thday of November,

JOHN E. HOY.

